如右图所示用木槌敲击同一个音叉,第一次轻敲,第二次重敲。两次比较,下列判断正确的是( )
A:重敲音调高
B:轻敲响度大
C:两次敲击音色不同
D:两次敲击音调一样高
— Please don't ask me about this. It is none of your business.
— I don't think so. I think everyone has the right to know it.
济南2月份某天的最高气温为5℃,最低气温为﹣1℃,则济南这天的气温差为( )